Late Collisions in Cisco Exam 200-125: Cisco Certified Network Associate Exam

Late Collisions

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Which two statements about late collisions are true? (Choose two.)



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A. B. C. D. E.


Late collisions are a type of collision that occurs when a packet collision is detected beyond the standard collision detection time frame. Here are the two correct statements about late collisions:

A. They may indicate a duplex mismatch:

A duplex mismatch is a situation where two connected devices operate with different duplex settings. This can cause collisions, including late collisions. Late collisions may occur when a device is in full-duplex mode, and the other device is in half-duplex mode. In this situation, the full-duplex device can detect the collision only after it has transmitted the entire frame, resulting in a late collision.

B. By definition, they occur after the 512th bit of the frame has been transmitted:

Late collisions are defined as collisions that occur after the first 512 bits of the frame have been transmitted. This is because if a collision occurs before this point, it is detected as a normal collision and handled accordingly. If a collision occurs after this point, it indicates that the frame was not transmitted correctly